diff --git a/conservancy/usethesource/forms.py b/conservancy/usethesource/forms.py
index 9328b6d5a2d82ca0dd607febbb5eed119b3c95ff..3f1277f060987b5d07594542645ff11b07d70da2 100644
--- a/conservancy/usethesource/forms.py
+++ b/conservancy/usethesource/forms.py
@@ -4,9 +4,11 @@ from .models import Comment
 
 
 class CommentForm(forms.ModelForm):
+    post_to_list = forms.BooleanField(required=False)
+
     class Meta:
         model = Comment
-        fields = ['time', 'message']
+        fields = ['time', 'message', 'post_to_list']
 
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)